Radiation protection dosimetry最新文献

Generalizability of AI-based image segmentation and centering estimation algorithm: a multi-region, multi-center, and multi-scanner study.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-08 DOI: 10.1093/rpd/ncaf018

Neal S Krishna, Emiliano Garza-Frias, Giridhar Dasegowda, Parisa Kaviani, Lina Karout, Roshan Fahimi, Bernardo Bizzo, Keith J Dreyer, Mannudeep K Kalra, Subba Digumarthy

{"title":"Generalizability of AI-based image segmentation and centering estimation algorithm: a multi-region, multi-center, and multi-scanner study.","authors":"Neal S Krishna, Emiliano Garza-Frias, Giridhar Dasegowda, Parisa Kaviani, Lina Karout, Roshan Fahimi, Bernardo Bizzo, Keith J Dreyer, Mannudeep K Kalra, Subba Digumarthy","doi":"10.1093/rpd/ncaf018","DOIUrl":"https://doi.org/10.1093/rpd/ncaf018","url":null,"abstract":"We created and validated an open-access AI algorithm (AIc) for assessing image segmentation and patient centering in a multi-body-region, multi-center, and multi-scanner study. Our study included 825 head, chest, and abdomen-pelvis CT from 275 patients (153 females, 128 males; mean age 67 ± 14 years) scanned at five academic and community hospitals. CT images were processed with the AIc to determine vertical and horizontal centering at the skull base (head CT), carina (chest CT), and L2-L3 disc (abdomen CT). We manually measured the vertical and horizontal off-centering. We found strong correlations between AIc and manual estimate of off-centering in both the vertical (head, r = 0.93; chest, r = 0.94; abdomen, and r = 0.95) and horizontal directions (head CT, r = 0.85; chest, r = 0.85; abdomen, r = 0.8) and across age groups (r = 0.70-0.97), gender (r = 0.81-0.96), and multiple scanners from the five sites (r = 0.74-0.99). The AIc area under the receiver operating characteristic curve for centered and off-centered CT exams ranged from 0.72 (head) to 0.99 (chest). Therefore, our study showed that positron-emission tomography/CT (PET/CT) examinations commonly exhibit significant off-centering, particularly with vertical deviations often exceeding 30 mm and horizontal deviations between 10 and 30 mm. In addition, it demonstrated that our AI model can effectively assess both vertical and horizontal off-centering, although it performs better at estimating vertical off-centering.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143804032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to: Healthcare regulatory body: potential risk assessment in mammography facilities.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-08 DOI: 10.1093/rpd/ncaf042

引用次数: 0

Healthcare regulatory body: potential risk assessment in mammography facilities.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-07 DOI: 10.1093/rpd/ncaf028

Marcus Oliveira, Marcus Navarro, Eliana Costa, Djeimis Kremer, Regina Pinheiro, Vanessa Freitas, Igor Modesto, Eric Macedo, Jeovana Ferreira, Daniele Andrade, Lauro Damasceno, Enoque Joseneas

引用次数: 0

Assessment of natural radioactivity and radiation risks in soil near the Manyoni uranium deposit, Tanzania.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-07 DOI: 10.1093/rpd/ncaf021

G W Mlay, M I Kaniu, L W Njenga, K D Njoroge, M J Gatari, K K Kilel, I J Lugendo

引用次数: 0

Evaluation of shielding materials against galactic cosmic rays for protecting astronauts.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-07 DOI: 10.1093/rpd/ncaf022

Xiaoyu Li, Yutao He, Huanyu Han, Zhi Chen

引用次数: 0

Favorite pastime but leading nowhere.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-07 DOI: 10.1093/rpd/ncaf020

Yigal Horowitz

引用次数: 0

Annual effective dose and associated health risk estimation using gross alpha and Beta activity concentrations in bottled mineral water in Morocco.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-07 DOI: 10.1093/rpd/ncaf019

M Laassiri, H Ait Bouh, N Ziad, J Naouli, A Laissaoui

{"title":"Annual effective dose and associated health risk estimation using gross alpha and Beta activity concentrations in bottled mineral water in Morocco.","authors":"M Laassiri, H Ait Bouh, N Ziad, J Naouli, A Laissaoui","doi":"10.1093/rpd/ncaf019","DOIUrl":"10.1093/rpd/ncaf019","url":null,"abstract":"Water usually contains small quantities of radioactivity. The presence of significant levels of radioactivity in drinking water sources poses potential health risks to the public. Consequently, determining the concentrations of gross alpha and gross beta activity in water is essential for ensuring water safety. Thirteen commercially bottled mineral water samples were collected from Moroccan markets and analyzed using the Liquid Scintillation Counting technique, based on the ISO 11704:2018 method. The results show that the activity concentrations range from a minimum below the lower limit of detection to a maximum of 0.21 ± 0.02 and 0.15 ± 0.01 Bq·L-1 for gross alpha and gross beta, respectively. The concentrations of anions and cations are within recommended limits for drinking water. For each sample, the annual effective dose was calculated and lifetime cancer risks were estimated. The levels of the annual effective dose and lifetime cancer risk were all below the World Health Organization's recommended values for drinking water quality.Highlights: ","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"322-332"},"PeriodicalIF":0.8,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143617047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of radionuclides and radiation hazards in soil, sediment, water, and rock in Sylhet, Bangladesh.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-07 DOI: 10.1093/rpd/ncaf027

Khairum Haque Orthi, Thuheda Sultana, Jannatul Ferdous, Mia Mohammad Mahfuz Siraz, Abdul Hannan

{"title":"Analysis of radionuclides and radiation hazards in soil, sediment, water, and rock in Sylhet, Bangladesh.","authors":"Khairum Haque Orthi, Thuheda Sultana, Jannatul Ferdous, Mia Mohammad Mahfuz Siraz, Abdul Hannan","doi":"10.1093/rpd/ncaf027","DOIUrl":"10.1093/rpd/ncaf027","url":null,"abstract":"The natural radioactivity level in soil, sediment, and water samples collected from the Bisnakandi region in Sylhet was measured using a high-purity germanium detector. The mean activity concentrations of radionuclides in samples from the Bisnakandi were: 232Th (surface soil: 28.60 ± 6.44 Bq/kg, depth soil: 34.97 ± 7.37 Bq/kg, sediment: 41.70 ± 8.22 Bq/kg, water: 16.37 ± 2.13 Bq/L), 226Ra (surface soil: 33.70 ± 6.85 Bq/kg, depth soil: 40.09 ± 8.06 Bq/kg, sediment: 47.60 ± 9.38 Bq/kg, water: 19.76 ± 3.16 Bq/L), and 40K (surface soil: 304.60 ± 20 Bq/kg, depth soil: 375 ± 23.10 Bq/kg, sediment: 455.80 ± 19.2 Bq/kg, water: 241 ± 19.70 Bq/L). The average activity concentrations in rock samples for 232Th, 226Ra, and 40K in (Jaflong, Bholagonj) were (45.69 ± 14.32 Bq/kg, 40.06 ± 12.71 Bq/kg), (36.27 ± 16.89 Bq/kg, 36.84 ± 13.02 Bq/kg), and (430.34 ± 36.82 Bq/kg, 426.7 ± 78.98 Bq/kg), respectively. All the hazard parameters, such as radium equivalent activity, absorbed dose, annual effective dose, and external hazard index, were found within the acceptable level recommended by international organizations.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"386-397"},"PeriodicalIF":0.8,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143731401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing nuclear energy and radiological risks: a case study of radionuclide dispersion from potential nuclear power plant accidents in Ghana.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-07 DOI: 10.1093/rpd/ncaf024

S A Birikorang, S Dahunsi, S Adu, C A Nketia, A Blay

{"title":"Assessing nuclear energy and radiological risks: a case study of radionuclide dispersion from potential nuclear power plant accidents in Ghana.","authors":"S A Birikorang, S Dahunsi, S Adu, C A Nketia, A Blay","doi":"10.1093/rpd/ncaf024","DOIUrl":"10.1093/rpd/ncaf024","url":null,"abstract":"This study explored the significance of nuclear power and assessed radiological risks arising from potential containment leakage or failure, focusing on radionuclide dispersion and emergency preparedness. The findings revealed seasonal differences in radionuclide releases, with activities of 1.35 × 1015 Bq during the wet season and 4.70 × 1018 Bq in the dry season. Peak ground concentrations of 137Cs in the wet season reached alarming levels of 6.22 × 103 kBq/m2 within 2.14 km of the release point due to deposition processes like rainout and washout. In contrast, the dry season showed 137Cs ground concentrations of 4.88 × 104 kBq/m2, consisting primarily of noble gases. These results emphasize the importance of effective emergency preparedness strategies, including robust monitoring systems, evacuation plans, and public education. By focusing on protective measures informed by total effective dose equivalent assessments, this study highlights the need for proactive approaches to mitigate radiological hazards and enhance community resilience near nuclear facilities.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":"333-350"},"PeriodicalIF":0.8,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143674314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A survey on the determination of diagnostic reference levels in analog and digital radiography in Iran: a systematic literature review.

IF 0.8 4区环境科学与生态学

Radiation protection dosimetry Pub Date : 2025-04-05 DOI: 10.1093/rpd/ncaf030

Mehdi Ghazizadeh, Mohammad Reza Deevband, Mohammad Reza Kardan, Meysam Tavakoli

{"title":"A survey on the determination of diagnostic reference levels in analog and digital radiography in Iran: a systematic literature review.","authors":"Mehdi Ghazizadeh, Mohammad Reza Deevband, Mohammad Reza Kardan, Meysam Tavakoli","doi":"10.1093/rpd/ncaf030","DOIUrl":"https://doi.org/10.1093/rpd/ncaf030","url":null,"abstract":"Introduction: Although ionizing radiation plays a key role in both diagnosis and treatment, it brings potential risks, including incidence of cancer. Diagnostic Reference Level (DRL) is described as a tool to optimize the protection in the medical exposure for diagnostic procedures. The objective of this study is to propose a new method to calculate DRL by reviewing a series of articles which are published on the DRL in radiography.Materials and methods: The study analyzed 16 articles in the last ten years including published data on National and Local DRLs. The weighted mean method was used to propose unique quantities such as the entrance skin dose (ESD) or Entrance Surface Air Kerma (ESAK), and dose area product (DAP) as national DRL.Results: The results showed that there were differences in dose values among diagnostic radiology centers for different examinations. The study provides valuable information to calculate national DRL.Conclusion: The weighted mean of the ESD or ESAK and DAP values has been proposed as a new method for calculating national DRL values, which is considered the significant difference in statistical population and number of articles.","PeriodicalId":20795,"journal":{"name":"Radiation protection dosimetry","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143788716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0